Effect of Preparation Methods on Mechanical Properties of PVA/HA Composite Hydrogel

查看全文 作　　者：Dekun Zhang~1, Junjie Duan~1, Dagang Wang~2, Shirong Ge~2 1. School of Materials Science and Engineering, China University of Mining and Technology Xuzhou 221116, P. R. China 2. School of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, P. R. China

出　　处：《Journal of Bionic Engineering》索引2010年第7卷第3期,共9页

基　　金：supported by National Natural Science Foundation of China(Grant No.50875252);Program for New Century Excellent TaIents in University (Grant No.NCET-06-0479);Natural Science Foundation of Jiangsu Proyince (Grant No.BK2008005) 摘　　要：Poly(vinyl alcohol) (PVA)/hydroxyapatite (HA) composite hydrogel specimens were prepared with 15% PVA and 1%,2%, 3%, 4% and 5% HA by repeated freezing-thawing. The tests of static and dynamic mechanical properties were carried out todiscuss the influence of different contents of HA and freezing-thawing cycles on the mechanical properties of PVA/HA compositehydrogel. The results of static mechanical tests showed that the PVA/HA composite hydrogel with 3% HA and ninefreezing-thawing cycles had excellent stress relaxation properties, higher relaxation ratio, lower stress equilibrium value andpresented better properties of creep and recovery. The results of dynamic mechanical test showed that the PVA/HA compositehydrogel with nine freezing-thawing cycles had higher storage modulus and loss modulus, so was the PVA/HA compositehydrogel with 3% HA. 关键词：composite HYDROGEL HA CONTENTS FREEZING-THAWING cycles STATIC PROPERTIES dynamic PROPERTIES

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Effect of Preparation Methods on Mechanical Properties of PVA/HA Composite Hydrogel

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